2. Hormones synchronize ovarian and menstrual cycles
FSH – (follicle stimulating hormone)
from anterior pituitary
stimulates growth of the follicle
LH – (luteinizing hormone)
peaks about day 14 causes ovulation
stimulates completion of meiosis I
promotes secretion of more estrogen and progesterone
ovulation test
Estrogen –
released from maturing follicle
thickens endometrium
inhibits more FSH.LH release
Progesterone –
released from corpus luteum
thick endometrium
Ovarian Cycle
Menstrual Cycle

3. Hormones cont….. HCG – (Human Chorionic Gonadotropin)
When estrogen is low – pituitary releases FSH/LH
When estrogen is high – inhibit release of FSH/LH
HCG – (Human Chorionic Gonadotropin)
present if the embryo implants in the endometrium
Maintains corpus luteum and continues to secrete progesterone and estrogen to keep endometrium intact
pregnancy test

4. Secondary sex characteristics results from hormones
Male
Deeper voice
Beard and more body hair
Chest broadens
Larger muscles
Langer growth stage
Female
Enlargement of breasts and reproductive organs
Wider hips
Hair in armpits and pubic area
Menstruation
Fat deposits under skin